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Class org.netlib.lapack.DPTTRS

java.lang.Object
   |
   +----org.netlib.lapack.DPTTRS

public class DPTTRS

extends Object

DPTTRS is a simplified interface to the JLAPACK routine dpttrs.
This interface converts Java-style 2D row-major arrays into
the 1D column-major linearized arrays expected by the lower
level JLAPACK routines.  Using this interface also allows you
to omit offset and leading dimension arguments.  However, because
of these conversions, these routines will be slower than the low
level ones.  Following is the description from the original Fortran
source.  Contact seymour@cs.utk.edu with any questions.

 *     ..
 *
 *  Purpose
 *  =======
 *
 *  DPTTRS solves a system of linear equations A * X = B with a
 *  symmetric positive definite tridiagonal matrix A using the
 *  factorization A = L*D*L**T or A = U**T*D*U computed by DPTTRF.
 *  (The two forms are equivalent if A is real.)
 *
 *  Arguments
 *  =========
 *
 *  N       (input) INTEGER
 *          The order of the tridiagonal matrix A.  N >= 0.
 *
 *  NRHS    (input) INTEGER
 *          The number of right hand sides, i.e., the number of columns
 *          of the matrix B.  NRHS >= 0.
 *
 *  D       (input) DOUBLE PRECISION array, dimension (N)
 *          The n diagonal elements of the diagonal matrix D from the
 *          factorization computed by DPTTRF.
 *
 *  E       (input) DOUBLE PRECISION array, dimension (N-1)
 *          The (n-1) off-diagonal elements of the unit bidiagonal factor
 *          U or L from the factorization computed by DPTTRF.
 *
 *  B       (input/output) DOUBLE PRECISION array, dimension (LDB,NRHS)
 *          On entry, the right hand side matrix B.
 *          On exit, the solution matrix X.
 *
 *  LDB     (input) INTEGER
 *          The leading dimension of the array B.  LDB >= max(1,N).
 *
 *  INFO    (output) INTEGER
 *          = 0:  successful exit
 *          < 0:  if INFO = -i, the i-th argument had an illegal value
 *
 *  =====================================================================
 *
 *     .. Local Scalars ..

DPTTRS()

DPTTRS(int, int, double[], double[], double[][], intW)

 public DPTTRS()

 public static void DPTTRS(int n,
                           int nrhs,
                           double d[],
                           double e[],
                           double b[][],
                           intW info)

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